System Simulation Engineer Trainee

System Simulation Engineer Trainee (Internship) – Nokia

Location: Amadora, Portugal. Duration: 12 months. Start date (tentative): January 2026.

We are seeking algorithm simulation engineers with knowledge of Layer 1 (L1) algorithms (OSI 7‑layer model), from system level all the way to L1 architecture and specification of 3GPP – mobile broadband standard. Candidates will be based in Amadora, Portugal, working within a global team and helping to ramp up a new system simulation team.

How You Will Contribute And What You Will Learn

• Collaborate on defining and optimizing Telecom Radio Access algorithms
• Model algorithms and functionalities in link‑level simulators
• Participate in technical reviews and document findings
• Support L1 architecture development

Key Skills And Experience

• Knowledge of 3GPP standardization documentation, processes and forums
• Background on wireless/telecom systems
• Programming skills in MATLAB
• Fluency in English

Nice to Have

• Knowledge of L1 So
  C chipset and chip‑level architecture
• Understanding of L1 algorithms
• Background in communications theory and signal processing
• Strong team‑working skills and the ability to collaborate with internal and external stakeholders

About Nokia

Join us in creating the technology that helps the world act together. We are a B2B technology innovation leader, pioneering networks that sense, think and act™, putting the world’s people, machines and devices in sync to create a more sustainable, productive and accessible future.

Learn more about life at Nokia.

About the Business Group

Join Mobile Networks (MN) and help us become the trusted partner of choice for Communications Service Providers (CSPs), as well as for non‑CSP entities in sectors such as utilities, transportation, public services and defense. Your work will contribute to delivering unbeatable customer experiences in wireless connectivity.

In the MN RAN R&D Unit we focus on the research and development of Radio Access Network (RAN) technologies for mobile networks. This includes developing and improving technologies such as 2G, 3G, 4G, 5G and 6G, as well as future wireless standards. With global experts and diverse career paths, you’ll grow your skills, lead breakthrough projects and shape the future of wireless technology.

Our recruitment process

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.

If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.

The length of the recruitment process may vary depending on the specific role’s requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia.

Benefits for trainees in Portugal

• Flexible and hybrid working schemes
• Meal allowance to support daily needs
• Well‑being programmes to support your mental and physical health
• Opportunities to join and receive support from Nokia Employee Resource Groups (NERGs)
• Employee Growth Solutions to support your personalised career & skills development
• Diverse pool of coaches & mentors to whom you have easy access
• A learning environment which promotes personal growth and professional development – for your role and beyond